Toolholder



July 9, 1940. T. s. SHAW 2,207,359

OOOOOOOOOO ER INVENTOR. Tryo/ms J. Sli/9W ATTORNEY..

Patented July 9, 1940 f TooLHoLDER Thomas S. Shaw, Detroit, Mich.,assigner to Wilfrid G. Torrance, Detroit, Mich.

Application February 28, 1938, Serial No. 193,043

2 Claims. (Cl. 279-87) and quickly removed and replaced when desired.The tool adapted to be secured by the retainer Itis an object of thepresent invention to prois provided with a shank 26 having a longituvidea toolholder of this class which will be simple dinally directedperipheral groove 21 formed in structure, economical of manufacture,durable, therein and in which the edge of the locking compact and freefrom any resilient or springplate 2U is adapted to engage. This plateZIlis like parts. of such width that when positioned in the slot I8 It isanother object of the invention to provide with its outer endsubstantially flush with the a iOOlhOldeI having a SllI-lClle Whelebythe tool outer face 28 of the retainer 9, the locking plate may bepositively locked in position. and pre- 20 will clear the bore orpassage I1. When the vented from dislodgement from the holder. toolshank 26 is positioned in the passage or bore Another object of theinvention is the provision I1, the inner end thereof will engage againstthe of a toolholder of this class having a plurality of face of theabutment plate I6 and when the axially directed parallel extendingpassages in shank 26 is rotated so that the groove 21 registers whichcooperating parts are positioned. with the slot I8, a threading inwardlyof the Other objects will appear hereinafter. screw head 24 will forcethe locking plate 20 in- 'Ihe invention consists in the combination andwardly and as it moves inwardly of the slot I8,

arrangement 0f parts hereinafter described and toward the abutment plateI6,it will move radialclaimed. ly of the tool shank 26 and engage in thegroove The invention will be best understood by a 2'I and serve tocla-mp the tool shank 26 in the reference to the accompanying drawingwhich bore I1 and force it tightly against the face of forms apart ofthis specication and in which: the abutment plate I6. This is due to thefact Fig. 1 is a central, vertical, sectional view of that the .groove2l has aninclinedterminalportion the invention. 29 clearly illustratedin Fig. 1. Consequently by Fig. 2 is a sectional view taken on line 2--2threading the screw head 24 inwardly and forcof Fig. 1. ing the lockingplate 2U inwardly, the tool shank Fig. 3 is a sectional View taken online 3 3 not only is locked against undue removal from of Fig. 1. theretainer 9 but is forced securely against the In the drawing I haveillustrated the invention abutment plate I6 so that a positive look isthus adapted for use in retaining a punch in position. provided whichwill prevent any looseness of FIOm the deSCTipi'fiOn, hOWeVeI', il? Willbe OlOVOILS the associated parts or any play of the same while that itis equally well adapted for retaining a die in use,

or other similar tool in a holder. The invention When it is desired toremove the tool from the COmDIiSeS a retaining blOCk 9 Which iS Securedretainer 9, it is but necessary to thread the screw by SCI'eWS l0 01 inany Other Suitable manner t0 head outwardly permitting the plate to movea punch plate DIOJ'eCiYlg outwardly from outwardly of its slot I9 untilit has disengaged which are doWelS l2 Which engage I1 lOO-CketS i3 fromthe groove in the shank 26 whereupon the formed in the face I4 of theretalner 9- The shank 26 may be removed by hand. It is obvious centralportlon'of theretainer 1s recessed as at that when the shank 25 is inthe depending M 5 and pressed mto-thls recess 1s 9 hardened am? lationto the retainer 9, it will drop out of the ground plate .I6 Whlch Servesas an abutmnt for passage or bore I'I when the locking plate 2l] is them91 reta'mer-by the holder'. Forme een' moved to inoperative position.It will be noted trally 1n the retainer or block 9 1s a passage I1 1 tht th t b1 d th 1 k which terminates at the inner face of the abutaso a Once e par s are asse@ e e OC ment plate la Extending through theretainer ing plate 1s not removed from its slot 1n order 9 andterminating at the ab-utment plate I6 is a to remove the 3001 Shanlifrom the passage I1 as comparatively narrow slot I8 having the inclinedthe s CreW 23 1S 0f Sucent length l30 Permll? Phe wall I9. This slot I8opens throughout its length baeklng OlllJWaI'dlY 0f the plate 2li t0IeleaSlIlg into the passage or bore l1. sudeamy positioned orinoperative position without permitting the in the slot I8 is a lockingplate 26 which is also plate 20 to become disengaged from the slot I8.provided with an inclined edge 2|. Threaded The width of the plate 20 isof such dimensions, into the threaded socket 22 formed in thererelatively to the diameter of the passage II, that My inventionrelates to a new and useful improvement in a toolholder adaptedespecially for holding a punch, a die or the like so that the same maybe readily mounted in position and easily tainer 9 is the screw 23having a head 2li which is adapted to overlie the slot I8. -This head2li being positioned in a recess 25 formed in the retainer 9.

it cannot become dislodged from the slot I8 by tilting over into thepassage or bore l1.

In this manner, I have provided a simple, economically manufactured anddurable retainer of the releasable type in which the use of springs orother resilient or yieldable means is entirely eliminated and in which apositive locking of the tool in the holder is effected.

While I have illustrated and described the preferred form ofconstruction, I do not wish to limit myself to the precise details ofstructure shown, but desire to avail myself of such variations andmodiiications as may come within the scope of the appended claims.

What I claim as new is:

1. A toolholder of the class described, coinprising: a retainer having atool receiving passage formed therein adapted for the reception of atool shank; a tool shank inserted in said passage and having an axiallyextending peripheral groove formed therein diminishing in depthproceeding toward the end of said tool shank, said retainer having asecond passage formed therein extending inwardly from one end thereofand axially of said rst named passage and opening at one side thereintoand having an inclined surface at the opposite side; a wedge-shapedlocke ing plate slideably mounted in said second passage through itsopen end and adapted upon inward movement therein for projecting at oneside into said tool receiving passage and engaging in the groove in thetool shank therein;

and means engageable with said locking plate for forcing the sameinwardly of said second named passage, the inward movement of saidlocking plate forcing said tool shank inwardly of said first namedpassage and clamping said tool shank against removal therefrom.

2. A toolholder of the class described, comprising: a retainer having atool receiving passage formed therein adapted for the reception of atool shank; a tool shank positioned in said passage and having aperipheral axially directed groove formed therein diminishing in depthtoward the end thereof, said retainer having a seoond passage thereinextending inwardly from one end thereof and axially of said first namedpassage and opening at one side thereinto and having an inclined surfaceat the opposite side; a wedge-shaped locking plate slideably mounted insaid passage and adapted upon inward movement thereof for projecting atone side into said tool receiving passage and engaging in the groove inthe tool shank therein for forcing said tool shank inwardly of said rstnamed passage and clamping the same therein, said shank engaging side ofsaid plate and the opposite side of said plate being inclined to theaxis of said plate and converging toward the inner end of said plate;and threaded means on said retainer adapted upon threading for forcingsaid locking plate in- Wardly of said second named passage.

THOMAS s. SHAW.4

